Coffee grinder



FIG. 1 is a right side perspective view of a coffee grinder according to our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof. 

CLAIM We claim the ornamental design for a coffee grinder, as shown and described. 